Oil system.



PATBNTBD JAN. so, 1906. H. o. MARMON. OIL SYSTEM.

` APPLICATION FILED FEB.13, 1905.

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H C. MARMON.

OIL SYSTEM.

APPLICATION FILED FBB.13.1905.

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nowARD CARPENTER MARMoN, or iNDiANAPoLIs, INDIANA, AssiGNoR 'IO NORDYKE & MARMON COMP CORPORATION OF INDIANA.

Specicaton of Letters liatent.l

H.. SYSTEM.

Patented Jan. 30, 1906.

Application led'ebrnary 13, 1905. Serial No. 245,421.

To @ZZ whom it may concern,.-

Be it known that I, HOWARD CARPENTER MARMON,. a citizen of the United States, residing at Indianapolis, in the county of Marion and State of Indiana, have invented certain new and useful Im rovements in Oiling Systems, of which the ollowing is a speciiication.

The object -of my invention is to provide.

means through which the introduction may be made and of such character that no packing is required to prevent leakage and all leakage is returned to the pump.'

he accompanying drawings illustrate my invention.

` communicate passages 14, formed throughf Figure 1 is a vertical section of an enginecasing, in which is mounted a four-crank' shaft provided with my invention, the Y pitmen, their connected pistons, and vthe cy1in ders therefor being omitted for convenience of illustration. Fig. l2 is a section, on a larger scale, on line 2 2 of Fig. 1 with one of the pitmen applied. Fig. 3 is a detail section, on la larger scale, ofthe oil-introducing device. Fig. 4 isa detail, on a larger scale, on line 4 4 of Fig. -1. "Fig. 5 is a vertical section of a de sira'le form of by-pass valve; Fig. 6, a section on line 6 6 of Fig. 5, and Fig. 7 a section on line 7 7 of Fi 5.

In the drawings, 1() in icates the crankshaft, of any desired form, provided with a plurality of'wrist-pins 11 and suitable journals 12.' Running through the crank-shaft and the several journals is a central bore 13, as shown in dotted lines in Fig. 1, withwhich the wrist-pins and crank-arms. These passages may be formed in any manner well known in machine-shops, preferably by boring and plugging' the open ends of the borings. Leading from the passage 13 outward smaller dischar e-passage 15, and leading to the periphery of each wrist-pin from the passage 14 is a small discharge-passage 16. The oil is introduced into the end of the crankshaft 10 by. the feeder. in Fig. 3.) This feeder consists of a shelllike body 17, themain annular portion 18 of to the periphery of each journal 12 is av ANY, OF INDIANAPOLIS,l INDIANA, A

(Shown particularly v whichis sleeved snugly over the end -of shaft v 10. The annular portion 18 has formed in its inner periphery a shallow thread or spiral groove 19, whichleads inward from the-open end thereof in the direction of rotation of the shaft 10. This vspiral groove leads into an annularchamber 20, which discharges into a return-pipe .21., Brazed or otherwise suitably secured in the casing 17 concentric with the annulus 18 is a feed-tube 22, which has no communication with the chamber 20' and- Whi'chiits the bore 13 of shaft 10 snugly and .extends a considerablefdistance thereinto.

This tube at its end and on its periphery'is provided with a shallow spiral groove 23, which leads toward the end of the tube in the direction 'of rotation of the shaft. The casing end of tube l 22v communicates with a chamber 24, formed in casing 17, and into this chamber leads a suitable supply-pipe 25.

Pipe 2 5 leads from the discharge-outlet 26 of a-small pump 27. Said pump may be of any type, in the drawings being shown as consisting of a suitable casing, within which.

is mounted a pair of meshing gears 2828, one of said gears being driven by means of a shaft 29, connected through a suitable separable clutch 30 with a shaft 31, Which in turn may be driven by any suitable gearing with any rotating part of the en 'ne structure -as, for

instance, thev cam-sha t 32-the present invention being shown in connection with a gas-en 'ne structure,'but of course not to be limite to'such use. The pump27 is provided with -a suitable inlet-pipe 33, the end of which lies in the bottom of an oil-reservoir 34, into which the drippings from the various bearings to be oiled may flow. The overiiow- -pipe 21 leads into this reservoir.

Mounted upon each Wrist-pin 11 is a pit- IOO man 35, which carries a tube 36, which forms' a communication. between the inner or wristpin end and the bearing at the outer end. In practice I provide the outer end with a suitable bushing 37, having an opening 38 therethrough, which opening is adapted to register vwith the outer end of the tube 36, but is of less diameter than the diameter of the tube, the bushing 37 thus serving to hold the tube 5 36 against longitudinal'displacement in one direction. For convenience in assembling the parts I have shown in Fi 2 the wrist-pin end of the pitman proyide with the usual removable cap 39- and the splitbushing 40,. One-half'of this bushing 40 is provided with an opening 41, which registers With tube 36, but' 1s also of somewhat less diameter than the diameter of tube 36, thus serving to hold the tube against displacement in this direction.A .l

The casing 17 is merely slipped over the nd of the crank-shaft, as clearly shown in -iig. 3, and oil is forced by the pump through the tube 25 into chamber 24, and thence through tube 22 into bore 13, through which and the assages 14 the oil is forced, and consequent y is forced out throu h the small passagesy 15 and 16, so as to ubricate the journals and wrist-pins. At the same time the oil is also forced through opening 41 tube 36, and opening 38 to the bearing at'the farther end of each pitman, so that a constant stream of oil is continuousb7 supplied under pressure to all of the bearings associated with 3o the crank-shaft.

It will be readily understood that passages may be led through station parts to an desired bearings from any o the joulna bearings of the crank-shaft, if desired. Such a construction is illustrated at the left of Fig. 1, where a passage 50 is formed through the wall of the inclosm casing 51 and leading to the bearing 52 of t e cam-shaft 32. A portion of the passage 50 leads transversely throu h -a studhaft 53,' and formed in this stud-s aft is a longitudinal passage 54, (indicated by dotted lines,) which leads outward to a point beneath thegear 55, which is journale thereon.

' There is of course considerable pressure of oil in bore 13, and there is a tendency, therefore, for the oil to work out along tube 22. The spiral groove 23, however, causes most of this oil to be returned to the bore 13, for 5o the reason that the directionof rotation of the shaft 10 is such as to carry the oil in a oove 23 towardthe inner end of the tube. f, however,the oil does passfoutward along tube 22 and Work out to the periphery of shaft 10, it is returned into chamber bi ipe 21l back to the reservoir. Actual tests ave shown that with this apparatus the fit of tube 22 in bore 13 need not be ti ht and that annulusn 18 needonly fit the s aft 10 fairly well; 'yet even then there' is no leakage of oil from the feeder, but it all passes 'to pipe 21.

The amount of oil supplied to the bearings 65 by the pump is dependent, of course, upon there of a cylindricalshell 60, adapted to be the groove 19 and flows from thence throug the speed of the engine, and in order that at high speeds there may not be too much oil forced to the bearings I prefer to provide a by-pass valve in the pi e 25 in order that the deliveryLpressure oft e oil to the several 7o bearings may never exceed a desired amount.

AAny desired form of valve may be used,fa convenient form of automatic valve being that shown in Figs. 5, 6, and 7 consisting threaded into an ordinary T, fitting in the pipe 25.. vThe shell is provided with a suitable valve-seat 61, adapted to receive 'a valve member or ball 62. The ball 62 is normally urged to its seat by a suitable springA 63, which spring is supported upon the d1- verging arms of a cotter-pin 65. For convenience in manufacture the casing 60 is provided at its lower end with a transverse perforation 66 and a pair of nearly opposite' perforations 67, the arrangement being such that the arms of the cotter-pin 65 may first pass together through the perforation 66 and then diverge, one arm assing through'each of the perforations 67, thus forming a seat for the lower end ofthe s ring 63. Outlet-passages 64 are formed t ough the wall of the casing 60 immediately beyond the valve-seat 61 and the arrangement is such that lwhen the pressure of oil in the pipe 25 exceeds the strength of spring- 63 the valve l62 will be temporarily forced from its seat, and the surplus of the oil discharged by the pump will be y-passed through the valve.

vI claim as my invention- 1 In an oiling system,the combination',with a bored rotatin member; of a feeder for introducing oil t ereinto comprising, a main hollow casing providedwith, an annulus arranged to 'slip 'over the end ofthe rotating member, adrip-chamber Within the annulus, an inlet-chamber within the casing, a spiral groove formed in the interior of the annulus and leading in the direction of rotation of the shaft inward toward the drip-chamber, a tube within the annulus communicating with the inlet-chamber and extending into the bore of the rotating member, there being a spiral oove on the eriphery of the inlet-tube and eading toward the inner end thereof in the di- I 1 5 rection of rotation of the-rotatingsmember; and an overflowipe leading from said firstmentioned cham er.

2. In an oiling apparatus, the combination, with a bored rotating member, of a feeder for I 20 introducing oil .therein comprising; a main hollow casing provided with, an annulus arranged to sh `over the end of the rotating member, a c amber Within the annulus, an inlet-chamber Within the casing, and a tube 125 communicating with said inlet-chamber andA extending into the bore of the rotating member; and an overflow-pipeleading from the first-mentioned chamber.

3. In an oiling apparatus, the combination, 13c

with a bored rotating member; of a feeder for introducing oil thereinto .comprising a, main hollow caslng provided with, anannulus arranged to slip over the end of the rotating member, a dup-chamber within the annulus,

an inlet-chamber, a tube communicating with said inlet-chamber and extending into the bore ofthe rotatin member, there being a spiral groove forme in the interior of the annulus and leading in the direction of rotation of the shaft inward toward the drip-chamber; and an overflow-pipe leading from said dripchamber.

4. In an `oiling apparatus, the combination, with a bored rotating member; of a feeder for i, introduci-n oil thereinto comprising a main hollow caslng provided with an annulus ari ranged to sli over the end of the rotating member, a dup-chamber Withinthe annulus, an inlet-chamber, a tube communicating with said inlet-chamber and extending into the bore ofthe rotating member, there bein a spiral groove running between the ann us introducing oil thereinto comprisingjatmain 3o hollovsT casing provided with an annulusyare rangedto sli over the end of the rotating member, a tu e arranged-concentrioallywith in said annulus and extendinginto the bore of the rotating member, and an inlet leading into-said tube.

6. In an oiling apparatus, the combination ofa tubular rotating member and a tubular `feeder telescoping therewith, said two parts having, between their coacting surfaces, a

leakage. 7. n an oiling apparatus, the combination .of a tubular rotating member, and a comound tubular feeder, the inner tube of. said veedel` telescoping within the tubular member and the outer tube telescoping over the tubular member, and `an eduction-passage leading from the inner end of the outer tubul lar portion of the feeder.

In witness whereof I have hereunto setmy hand and seal, at Indianapolis, Indiana, this 31st day of January, A. D. 1905. A

HOWARD CARPENTER ifmmiiori. v [L 5.]

Witnesses:

' ARTHUR M. Hoon, JAMES A. WALSH.

4o spiral groove leading in a direction to prevent 

